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Date:   Tue, 8 Dec 2020 06:51:37 +0000
From:   Parav Pandit <parav@...dia.com>
To:     Randy Dunlap <rdunlap@...radead.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>
CC:     "jacob.e.keller@...el.com" <jacob.e.keller@...el.com>,
        Jiri Pirko <jiri@...dia.com>
Subject: RE: [PATCH net-next v5] devlink: Add devlink port documentation



> From: Randy Dunlap <rdunlap@...radead.org>
> Sent: Tuesday, December 8, 2020 6:45 AM
> 
> Hi--
> 
> On 12/7/20 2:13 PM, Parav Pandit wrote:
> > Added documentation for devlink port and port function related
> commands.
> >
> > Signed-off-by: Parav Pandit <parav@...dia.com>
> > Reviewed-by: Jiri Pirko <jiri@...dia.com>
> > Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
> > ---
> > Changelog:
> > v4->v5:
> >  - described logically ingress and egress point of devlink port
> >  - removed networking from devlink port description
> >  - rephrased port type description
> >  - introdue PCI controller section and description
> 
>      introduce
> 
> >  - rephrased controller, device, function description
> >  - removed confusing eswitch to system wording
> >  - rephrased port function description
> >  - added example of mac address in port function attribute description
> 
> > ---
> >  .../networking/devlink/devlink-port.rst       | 116 ++++++++++++++++++
> >  Documentation/networking/devlink/index.rst    |   1 +
> >  2 files changed, 117 insertions(+)
> >  create mode 100644 Documentation/networking/devlink/devlink-port.rst
> >
> > diff --git a/Documentation/networking/devlink/devlink-port.rst
> > b/Documentation/networking/devlink/devlink-port.rst
> > new file mode 100644
> > index 000000000000..dce87d2c07ac
> > --- /dev/null
> > +++ b/Documentation/networking/devlink/devlink-port.rst
> > @@ -0,0 +1,116 @@
> > +.. SPDX-License-Identifier: GPL-2.0
> > +
> > +============
> > +Devlink Port
> > +============
> > +
> > +``devlink-port`` is a port that exists on the device. It has a
> > +logically separate ingress/egress point of the device. A devlink port
> > +can be of one
> 
>                                                           port can be any one
>    of many flavours.
> 
> > +among many flavours. A devlink port flavour along with port
> > +attributes describe what a port represents.
> > +
> > +A device driver that intends to publish a devlink port sets the
> > +devlink port attributes and registers the devlink port.
> > +
> > +Devlink port flavours are described below.
> > +
> > +.. list-table:: List of devlink port flavours
> > +   :widths: 33 90
> > +
> > +   * - Flavour
> > +     - Description
> > +   * - ``DEVLINK_PORT_FLAVOUR_PHYSICAL``
> > +     - Any kind of physical networking port. This can be an eswitch physical
> > +       port or any other physical port on the device.
> > +   * - ``DEVLINK_PORT_FLAVOUR_DSA``
> > +     - This indicates a DSA interconnect port.
> > +   * - ``DEVLINK_PORT_FLAVOUR_CPU``
> > +     - This indicates a CPU port applicable only to DSA.
> > +   * - ``DEVLINK_PORT_FLAVOUR_PCI_PF``
> > +     - This indicates an eswitch port representing a networking port of
> > +       PCI physical function (PF).
I forgot to remove 'networking' from the networking port here.
Will include this fix this in v6 in Saeed's subfunction patchset along with addressing Randy's comments.

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